15% of People Are Totally Freaked Out by This Image

When compared to creepy-crawly spiders, haunting darkness, or extreme heights, "clustered bumps and holes" might not seem so terrifying. But for 15% of people, the fear factor is real.

Known as trypophobia, the pathological fear is not recognized in the American Psychiatric Association's manual of mental disorders, though thousands claim to have it. And for those who do, images of gathered holes in skin, sponges, honeycomb, and seed pods (such as the lotus pod above), can trigger physical sickness and even panic attacks.

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One study has claimed that this reaction is less of fear, but more of a primitive aversion to danger. The type of danger exactly? That's still being studied.

So while more is yet to be discovered about the mysterious condition, one thing's for sure: If you think you have it, do not scroll any further.